Whiffletree-cqupling



(No Model.)

M. B. KIRKER.

WHIFFLETREE COUPLING.

Patented Nov. 8, 1887.

WITN EssEs UNITE =1 rrren.

MILTON B. KIRKER, OF PITTSBURG, PENNSYLVANIA.

WHIFFLETREE-CQUPLlNG.

SPECIFICATION forming part of Letters Patent No. 372,681, dated November 8, 1887.

Application filed February 19, 1886. Serial No. 192,529.

To all whom it may concern:

Be it known that I, MILTON B. KIRKER, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, a citizen of the United States, have invented or discovered certain new and useful Improvements in Doubletrees and Fittings Therefor, of which improvements the following is aspecifieation.

In the accompanying drawings, which make part of this specification, Figure 1 is a rear elevation of my improved construction of donbletree and fittings. Figs. 2, 3, and 4 are sectional views on the lines w x, y y, and z 2, Fig. 1, respectively, showing two forms of construction of the devices for connecting the singletrees to the ends of the donbletree. Fig. 5 is an elevation of a neck-yoke.

The invention herein relates to certain improvements in the construction and arrangement of clips for uniting whiflietrees to donbletrees, whereby a strong and durable connection for said parts is obtained; and to this end my invention consists in the construction and combination ofparts, substantially as hereinafter more fully described and claimed.

The whiftletrees 1 and the doubletree 2 are formed of wrought-iron or steel tubes tapering slightly from the middle to the ends, as clearly shown. To the ends of the whiflletrees are secured the usual fittings, 3, for the attachment of the traces. These fittings 3 are formed of malleable east-iron, and the cylindrical portion adapted to fit over the ends of the whiffietrees is formed with an internal diameter slightly less than the external diameter of the tubes 1 at their ends. In attaching the connections to the tubes said connections are expanded by heat and then slipped onto the ends of the tubes. The contraction of the metal of the connections will firmly secure them to the ends of the tubes, thus avoiding the necessity of bolts or rivets.

In connecting the tubes 1 to the tube 2, to form a doubletree, I use a clip or connection composed of two cylindrical blocks, 4 and 5, formed of malleable east-iron, having longitudinal openings therethrough for the reception of the tubes 1 and 2, to which said blocks are secured by shrinking on in the manner above described. On the lower side of the block 4 is formed a boss or projection, 6, hav- (No model.)

ing a circular recess for the reception of a correspondingly-shaped projection, 7, formed on the upper side of block 5, said projection forming a pivot for the block 4 on the whiflietree 1. These blocks are held together by the transverse bolt 8, as shown. The upper side of the block 4 and the under side of the block 5 are flattened to form a bearing for the ends of the brace 9, through which the ends of the bolt pass. This brace, which serves to support the upper end of the bolt as against transverse strains, may be aud preferably is formed integral with the block 5, as shown in Fig. 2.

The connection 10 for attaching the doubletree to the wagon is shrunk on the tube in the manner above described, and consists of the ring portion 1], the handle or lifting-bail 12, the draft-ring 13, and the fastening arm or lug 14. This connection or fitting, as are all the fittings, is formed of malleable iron. The fitting 3 consists of the cylindrical portion adapted to fit over the ends of the singletrees and the ring to which the traces are connected.

The single and double trees may be formed of any suitable metal, as desired.

The above-described improvement in connecting fittings of malleable cast-iron to single and double trees is equally applicable for connecting the malleable cast-iron fittings 15 c to tubular metal neck-yokes 16, as will be readily understood.

No claim is made herein to the manner of securing the fittings onto the double-trees, as such construction or method of securing the fittings in place forms the subject-matter of another application, filed February 24, 1887.

I claim herein as my invention* 1. The combination of a metal tubular don bletree and singletrces with a malleable-iron central fitting therefor, consisting of the ring 11 and the bail 12, substantially as set forth.

2. The combination of a metal tubular doubletree and singletree with a malleable-iron central fitting therefor, consisting of the ring 11, the bail 12, and the draft-ring 13, substantially as set forth.

3. As an article of manufacture, the hereindeseribed fitting for doubletrees, consisting of the ring 11, the bail 12, the draft-ring 13, and the fastening-lug 14, substantially as set forth.

4. In a clip for connecting singletrees and doubletrees together, the combination of the projection 7 the bolt8, and the brace 9, formed cylindrical portion 4, having a recessed prointegral with the. portion 5, substantially as jection, 6, the cylindrical portion 5, having set forth.

the projection 7, the bolt 8, and a brace, 9, for In testimony whereof I have hereunto set 5 laterally supporting said bolt, substantially as my hand.

set forth;

5. In a clip for connecting singletrees and MILTON KIRKER' doubletrees together, the combination of the Witnesses: cylindrical portion 4, having the recessed pro- DARWIN S. WOLOOTT,

IO jection 6, the cylindrical portion 5, having the W. B. CORWIN. 

